The WIU alumni club is selling padded bleacher seats as a fundraiser. The total fixed costs for the fundraiser are $4000.

There are three different models of bleacher seat being sold: Purple, Gold and Rocky. Information about the different models follows:

Purple Gold Rocky

Sales price per unit $40 $50 $80

Variable cost per unit 18 21 3

Sales mix 50% 20% 30%

At the fundraiser's breakeven point, how many Purple seats will need to be sold?